Abandon the 6mm and go with a 25-06 or 25-06ackley with 87 gr bullet and jump up to 120's for deer

Im a guessin that wouldnt help your BC any and your velocity very little. Bad trade. And I would put any 115 up against the 120 in 25 cal. Ive had both and killed a lot of crap with them both and that dart lookin 115 berger or smk has a good amount of SD for a 6mm and the 25 really doesnt. Even now with the new hybrids at 105 I would launch that 115 icepick just for the penetration. I guess I'm sayin a 115 in a 6 is deadlier than a 120 in a 25-06 for big critters and the 6mm will huff an 87 at real close to the same speed as a 25-06 with a lot better bc.

I shoot a 6mm-06 imp with a 30 degree shoulder and it is by far my favorite rifle. I shoot the 105 a-max at 3,250 fps out of a 26" rock creek. It is also one of my most accurate hunting rounds. They can be pushed up to 3,350 but the pressure starts getting pretty high at this point.

The biggest problem with 25 cal is the bullets(especially 100 gr and below) are stubby and soft for the 250 savage. I've got a 25 wssm, and it's a hell of a rifle but it takes a 120 bt to get the bc up enough for longer range.
I'm looking at rebarreling a striker, so I'm going to stay with a .473 bolt face so I could put the original barrel on with little tinkering.

The biggest problem with 25 cal is the bullets(especially 100 gr and below) are stubby and soft for the 250 savage. I've got a 25 wssm, and it's a hell of a rifle but it takes a 120 bt to get the bc up enough for longer range.
I'm looking at rebarreling a striker, so I'm going to stay with a .473 bolt face so I could put the original barrel on with little tinkering.

one has not completeted his journey in shooting till he's had some fun with a .250 Ackley!! Now there is a round that's pure magic
gary